vádana n. (ifc. f(A). ) the act of speaking, talking, sounding, [ŚBr.]; [ŚrS.]
the mouth, face, countenance, [MBh.]; [Kāv.] &c. (°naṃ √ kṛ, to make a face or grimace, °nī-√ bhū, to become a face)
the front, point, [R.]; [Suśr.]
(in alg.) the first term, initial quantity or term of a progression, [Col.]
(in geom.) the side opposite to the base, the summit or apex of a triangle, [Āryabh.]